Biocomposite and/or biomaterial with sunflower seed shells/husks

ABSTRACT

The invention relates to a biomaterial and/or a biocomposite based on sunflower seed shells/husks. According to the invention, it is proposed that sunflower seed shells/husks are used instead of wood, bamboo or other wood-like fiber products as the original material for the biocomposite products and are used for the production of such products in order to improve the previous biomaterials, and in particular also to design said materials for improved cost efficiency and to improve their material properties.

The present application is a divisional of U.S. patent application Ser.No. 14/356,980 filed on May 8, 2014, which is a U.S. National Stageapplication of PCT/EP2012/070348, filed on Oct. 12, 2012, which claimspriority from German Patent Application Nos. DE 10 2011 086 319.2, filedon Nov. 14, 2011, and DE 10 2012 209 482.2, filed on Jun. 5, 2012, thedisclosures of which are incorporated by reference herein in theirentirety.

FIELD OF THE INVENTION

It is noted that citation or identification of any document in thisapplication is not an admission that such document is available as priorart to the present invention.

The invention relates to a biocomposite or a biomaterial. Thesebiomaterials or biocomposites are already known by way of example as“wood-plastic composites” (abbreviated to “WPC”), i.e. wood-plasticcomposite materials. Other terms used for these are “wood(-fiber)polymer composites” and “wood-polymer materials”. The abovementionedbiomaterials are thermoplastically processable composite materials whichare produced from various proportions of wood—typically woodflour—plastics, and additives. They are mostly processed by modernprocesses of plastics technology, for example extrusion, injectionmolding, rotomolding, or by means of press techniques, or else by thethermoforming process.

Processing for WPCs is known to involve not only wood (in particularwood flour) but also other vegetable fibers, for example kenaf, jute, orflax.

The present invention aims to improve the WPCs known hitherto, i.e. thenatural-fiber-reinforced plastics known hitherto, and in particular toreduce costs for the starting materials in the production thereof.

In the WPCs known hitherto, the proportion of wood is regularly above20%, and there are therefore by way of example known WPCs in which theproportion of wood fiber or of wood flour is from 50 to 90%, thesematerials being embedded in a plastics matrix made of polypropylene (PP)or less frequently of polyethylene (PE). Because the wood is sensitiveto heat, the only possible processing temperatures are below 200° C. Athigher temperatures the wood suffers thermal changes and decomposition,and this alters the overall properties of the material undesirably.

Additives are also added in the natural-fiber-reinforced plastics knownhitherto, in order to optimize specific properties of the materials.Examples of these properties of the materials are the bonding betweenwood and plastic, flowability, fire protection, coloring and,particularly for external applications, also resistance to weathering,to UV, and to pests.

It is also already known that a WPC can be produced by using a mixtureof 50% of polyvinyl chloride (PVC) and 50% of wood fibers. WPCs of thistype based on thermoplastically processable thermosets, such as modifiedmelamine resin, are likewise under development, as is also theprocessing of products similar to wood, such as bamboo, the term usedfor these then being “bamboo-plastic composites” (“BPCs”). Theclassification “BPC” is used for WPCs where bamboo fibers have replacedwood fibers.

The advantages of the biomaterials described over traditional wood-basedmaterials such as particle board or plywood are the unrestricted,three-dimensional moldability of the material and greater resistance tomoisture. In comparison with solid plastics, WPCs offer greaterstiffness and a markedly smaller coefficient of thermal expansion. Thebiomaterials available hitherto also have the disadvantage of lowerbreaking strength than sawn timber; moldings with inserted reinforcementhave greater breaking strength than solid moldings and sawn timber. Thewater absorption of moldings with no final coating is higher than thatof solid plastics moldings or moldings with film coating or withflowable coating.

It is known that the biomaterials described hitherto can be used asdecking or for the production of boards, and it is equally known thatWPC can be used particularly in the construction industry, theautomobile industry and furniture industry, the outdoor sector forfloorcoverings (patios, swimming pools, etc.), facades, and furniture,in particular as replacement for timber from tropical regions.

There are also many known seating and shelving systems made of WPCs.Other applications are writing implements, containers, and householdequipment, and WPC biomaterials are used in the engineering sector asprofiles for electrical insulation, and in the automobile industry inparticular as interior door cladding and parcel shelves.

SUMMARY OF THE INVENTION

It is now an object of the invention to improve the WPC biomaterialsavailable hitherto, and in particular to make these less expensive, andto improve the properties of these materials.

DETAILED DESCRIPTION OF EMBODIMENTS

It is to be understood that the figures and descriptions of the presentinvention have been simplified to illustrate elements that are relevantfor a clear understanding of the present invention, while eliminating,for purposes of clarity, many other elements which are conventional inthis art. Those of ordinary skill in the art will recognize that otherelements are desirable for implementing the present invention. However,because such elements are well known in the art, and because they do notfacilitate a better understanding of the present invention, a discussionof such elements is not provided herein.

The present invention will now be described in detail on the basis ofexemplary embodiments.

The invention proposes use of sunflower seed shells/husks instead ofwood, bamboo, or other fiber products similar to wood as startingmaterial for WPC products, and for the production of products of thistype.

Sunflowers are cultivated in all regions worldwide, and the mainobjective of sunflower production is to obtain sunflower seeds and inparticular the contents thereof. Before the seeds are processed, thesunflower seed has to be shelled, and this means that the actualsunflower seed is freed from its shell/husk. Large quantities of saidshells/husks are produced during sunflower seed production, and are atype of waste product of sunflower seed production that can also be usedfor other purposes, for example as animal feed, in biogas plants, etc.

The first advantage of sunflower seed shells/husks is not only thatlarge quantities thereof are produced but also that they areintrinsically relatively small and therefore require only a small amountof further processing, such as comminution, in order to form thestarting product for an “SPC” (“sunflower-plastic composite”). Theenergy cost associated with the comminution or grinding of sunflowerseed shells/husks is markedly lower than that for the production of woodflour for WPC production.

Another particular advantage of the use of sunflower seed shells is thatthese are very suitable for use for an SPC which serves for theproduction of packaging, for example a bottle or jar, in particular offood packaging.

However, a first trial has shown in particular that comminuted or groundsunflower seed shells/husks have excellent suitability for processing inthe form of SPC and can therefore produce excellent food packaging whichin no way causes any disadvantageous or other alteration to the taste ofthe food that is stored.

The invention therefore also represents a very sustainable approach toconservation of resources in production of packaging material or thelike.

The processing of the comminuted or ground sunflower seed husks canadvantageously proceed in the same way as the production of wood-plasticcomposites.

The proportion of the sunflower seed husks here can be from 50 to 90% ofthe final product, and particular preference is given to a polypropylenematerial as plastics matrix, but it is also possible to use apolyethylene material or polyvinyl material, although the latter appearsto be less suitable.

The heat-sensitivity of sunflower seed husks (sunflower shells)certainly permits processing thereof at processing temperatures of up to200° C., and temperatures of up to 210° C. to 240° C., preferably 230°C., are also possible; at higher temperatures, thermal changes ordecomposition could occur.

Additives are added to optimize specific properties of the materials,for example the bonding between the sunflower seed husks and theplastic, the flowability of the sunflower seed husks/plastic mixture,fire protection, coloring and, particularly for food or drinkapplications, resistance to oil, to UV, and to pests.

Particular preference is given to a mixture of 50% of PP(polypropylene), PE (polyethylene), or ABS(acrylonitrile-butadiene-styrene) on the one hand and, on the otherhand, 50% of sunflower seed husks. This type of mixture therefore useson the one hand a fraction made of PP and on the other hand a fractionmade of (ground) sunflower seed husks (sunflower shells) in the samequantity, where the sunflower shells have the properties described inthe present application in respect of grain size, water content, oilcontent, etc. thereof. It is also possible to use PVC (polyvinylchloride) or PS (polystyrene) or PLA (polylactide) instead of theplastics described, such as PP, PE, or ABS. The processing temperatureis then sometimes determined by the plastics component if the maximumprocessing temperature thereof is below that of the shell material.

The inventive sunflower-plastic composite (SPC) here can be processed bya process which is already well established in plastics production.Particular preference is given to processing by means of injectionmolding, but it is also entirely conceivable and possible that any othertype of plastics processing is used.

In the case of injection molding, the material, i.e. the mixed materialcomposed of plastic on the one hand and of comminuted or groundsunflower seed husks on the other hand has to be homogeneous andamenable to problem free metering, in order that the entire melt hasgood flowability.

A desirable grain size of the sunflower seed husk material is thereforefrom 0.05 mm to 2 mm, preferably less than 1 mm. A particularlyadvantageous grain size of the sunflower shells (of the sunflower seedhusk material) is from 0.01 to 0.5 mm, particularly preferably from 0.1to 0.3 mm, and compliance with this grain size can also be achievedwhere necessary in that most of the husk material, e.g. 90%, is withinthe abovementioned range, and from 10 to 20% is outside of said range(by virtue of tolerance inaccuracies).

It is preferable that the sunflower seed husk material has a high levelof dryness, i.e. that the water content thereof is from 1 to 9%,preferably from 4 to 8%.

The husk material (shell material) can also have fat content which is upto 6%, preferably at most 4% or less. Because of the geometry of thesunflower seed husks, and because of low impact resistance, the wallthicknesses are designed to be thicker in the injection-molding processthan when plastics pellets are used alone. The substantially higher heatdistortion temperature is advantageous, and provides stiffness to thecomposition at higher temperatures. SPC moldings can therefore bedemolded at higher temperatures.

The invention is particularly suitable for use of an SPC for theproduction of packaging, preferably of food packaging, for example ajar, a bottle, or the like. This type of packaging can also if necessarybe provided with an internal and/or external coating, in order to renderthe entire packaging more robust, and in order to exclude any possiblesensory effect on the packaged material, such as oil or drinks, etc.,due to the packaging material, i.e. the SPC.

In the present application, the use of sunflower seed husks/sunflowerseed shells is the preferred use of a husk for the production of a“bioplastic composite”.

The invention can also use, instead of sunflower seed husks or shells ofsunflower seeds, other shells and, respectively, husks of other fruits,for example of nuts (in particular hazelnuts, walnuts, brazil nuts,beechmast, acorns) or of cereals, in particular rye, wheat, oats,triticale, barley, maize, rice, millet, or the like.

As already mentioned, it is already known that wood or wood fibers andthe like can be used as compound material for natural-fiber-reinforcedpolymers, in order to produce a wood-plastic compound material which isthen subsequently further processed. During the further processing here,the compound material is melted or in any event greatly heated, in orderto render it flowable and therefore processable. However, in the case ofwood-plastic composite materials this is very problematic when atemperature of 200° C. is reached, since in the temperature rangestarting at 200° C. the thermal stress to which the wood is exposed isexcessive, and the entire material suffers from the resultant adverseeffect. However, the polymers, i.e. polymer matrices such aspolyethylene (PE), polypropylene (PP), polystyrene (PS), or polyvinylchloride (PVC), have properties such as creep behavior and low heatdistortion temperature which make them unsuitable for most structuralapplications unless they can be processed at high temperatures, namelyat temperatures markedly above 200° C., for example in injection moldingor the like. Load-bearing elements made of wood-plastic compositematerial also have to have significantly better mechanical propertiesthan PP- or PE-based wood-plastic composite (WPC).

As mentioned, the use of high-performance plastics as matrix is subjectto very severe restriction from the prescribed melting point (up to 200°C.). Added to this, engineering polymers that might be considered havevery high prices which are unlikely to be economically viable.

Tests have now shown that processing temperatures achievable with theSPC biomaterial of the invention extend as far as 300° C., and thatprocessing in the range from 220° C. to 250° C. is never associated withany degradation of the material, and that it is also possible to offersignificant improvements in mechanical properties at an acceptableprice.

The biomaterial or biocomposite of the invention, using sunflower seedshells/husks, can be used with excellent results for plastics parts inthe automotive sector, films, and also carrier bags, packaging,industrial products and consumer products, decking, and furniture.Examples of possible uses in the automotive sector are shells ofwheelhousings (known as wheel arches), the engine cover and also theunderbody cladding. In the sector of films and carrier bags, particularmention may be made of the use of the biomaterial of the invention forthe production of silo films, packaging films and carrier bags, and inthe packaging and containers sector particular mention may be made inthe invention of the production of food-and-drink packaging, trashcontainers, and plastics jars, and corresponding containers. Anotherparticular possible inventive use of the biomaterial of the invention isthe production of drinks crates, breadboxes, and plant pots, and alsothe production of portable equipment for the household and gardensector, for example chairs, benches, tables, and also of decking anddoors.

Finally, it has been found that the impact resistance of the biomaterialof the invention can be adjusted in a desired manner by varying, on theone hand, the flower content of the sunflower seed shell materialand/or, on the other hand, the grain size thereof.

As mentioned, the biomaterial of the invention or the biocomposite ofthe invention comprises sunflower seed shells/husks, and the biomaterialof the invention or the biocomposite of the invention thereforecomprises sunflower seed shells/husks as base material. Where theexpression sunflower seed husk material is used in the presentapplication, this means the same as sunflower shells, sunflower seedshells, and sunflower husks. The material involved is always the shellmaterial of sunflower seeds.

If, after the shell material has been separated from the seed, i.e.after shelling, the parameters of the material in respect of watercontent, grain size, or fat content, differ from what is used withparticular advantage according to the present application, the materialis correspondingly treated and processed. If by way of example the shellmaterial has a water content of 15%, said water content is reducedspecifically by drying to the desired value. If the shell material aftershelling has a grain size that is too high, the desired grain size isachieved by subsequent grinding. If the shell material after shellinghas excessive fat content, the fat content in the shells is specificallyreduced by a conventional fat absorption process (also achievable byheat treatment).

Typical compositions of a biomaterial are mentioned below, and on theone hand comply with desired technical properties, and on the other handare markedly more advantageous than previous (bio)plastics.

1. Embodiment: “ABS 300” Bioplastic

520 kg of PP (polypropylene), 300 kg of shells, 30 kg of additive(odor), 30 kg of additive (impact resistance), 30 kg of additive(moisture), 30 kg of additive (flow property), 30 kg of additive(adhesion promoter), 30 kg of additive (stripping agent).

A mixture of said material is then introduced in the usual way to acompounding process in such a way that the desired plastic in thedesired form can then be produced from the compounded material, anexample being extrusion or injection molding or rotomolding or presstechniques or thermoforming processes.

An example of the suitable adhesion promoter additive is the product“SCONA TPPP 8112 FA” (adhesion modifier for polypropylene-natural-fibercompounds and in TPES compounds) from BYK, Additives & Instruments,Technical Data Sheet, Issue 07/11, a product from, and a company of, theALTANA group. The Technical Data Sheet for this product is listed astable 1.

A suitable stripping agent additive is the product “BYK-P 4200”(stripping agent for reducing odor and VOC emissions in thermoplasticcompounds), Data Sheet X506, Issue 03/10, from BYK Additives &Instruments, a company of the ALTANA group. The Data Sheet for theproduct is attached as table 2.

A product that appears to be particularly suitable as additive tocounter odor generation is “Ciba IRGANOX 1076” (phenolic primaryantioxidant for processing and long-term thermal stabilization), aproduct from Ciba. The Data Sheet for this product is attached as table3.

Another additive suitable for process stabilization is the product “CibaIRGAFOS 168” (processing stabilizer) from Ciba. A description of thisproduct is attached as table 4.

A particularly suitable polypropylene material is the product “MoplenEP300K-PP-Lyondell Basell Industries”. A Data Sheet for this product isattached as table 5.

Another composition (2^(nd) embodiment) of a different biomaterial withthe in-house name “PP 50” is as follows:

45% of Moplen EP300K PP pellets

50% of sunflower shells

Irgafos 168, powder, 0.20%

Irganox 1076, powder, 0.30%

BYK P 4200, 2.00%

Scona TPPP 8112 FA, powder, 2.5%

The abovementioned constituents are compounded in the usual way, and canthen be processed for the production of the desired plastics product ofthe present application in processes described, e.g. extrusion,injection molding, thermoforming, rotomolding, press techniques.

When the term compounding is used in the present application, it meansthe plastics-compounding process to which the biomaterial or bioplasticof the invention is subjected, and this means specifically thevalue-added process which describes the specific optimization of theproperty profiles of the biomaterial of the invention through admixtureof additional substances (fillers, additives, etc.). The compoundingprocess takes place by way of example in an extruder (e.g. a twin-screwextruder, but it is also possible to use a contrarotating twin-screwextruder or else a planetary-gear extruder and co-kneader for thispurpose) and comprises inter alia the process operations of conveying,melting, dispersion, mixing, devolatilizing, and compression.

The purpose of the compounding process is to provide, from a rawplastics material, a plastics molding composition with the best-possibleproperties for processing and use. The objects of the compoundingprocess here are to change the particle size, to incorporate additives,and to remove undesired constituents.

The compounding process finally produces an outgoing biomaterial whichcomprises the individual outgoing constituents, i.e. shell material,polypropylene, additives, etc., and specifically in mixed form. Thecompounded biomaterial product is generally produced in the form ofintermediate product taking the form of a pellet or the like, in such away that it can then be further processed in a plastics-processingmachine to produce the desired plastics product, e.g. in aninjection-molding machine.

By means of the invention it is possible to combine a byproduct ofsunflower processing with plastic and thus, in a manner that conservesresources and is sustainable, to achieve a reduction of from 30% to 70%in the dependency of plastics production on petroleum.

Associated with this is the very favorable effect that the processing ofthe biocomposite or biomaterial of the invention also has on the CO₂cycle, and also on the life cycle assessment of the products producedtherefrom.

By means of the invention it is also possible to achieve the processingof the biomaterial of the invention—which can also be calledbiopolymer—at up to 300° C. (this having been found in initial tests)and to provide a novel biomaterial (biopolymer) with significantlyimproved mechanical properties at an acceptable price.

The biomaterial (biopolymer) of the invention can in particular be usedin all product segments, and existing tooling can be used withoutdifficulty for processing here.

The aim of the invention, to develop a biomaterial (biopolymer) whichhas a very high level of biofill and which nevertheless can be processedwithout difficulty in the form of industrial bioplastic, has beenconvincingly achieved. Finally, it is also possible, instead of theplastics described (PP, PE, ABS, PVC (polyvinyl chloride), PS(polystyrene)), to admix, or compound, a polylactide (polylactic acid)(abbreviated to PLA) with the plastics shells (the flour from these).The biological content of the entire plastic is thus again increased.PLA plastics per se are already known and are generally composed of manylactic acid molecules chemically bonded to one another, and are membersof the polyester class. Polylactide (PLA) plastics are biocompatible.

The biomaterial of the invention can be used for the production of verydifferent types of products, for example for the production of packaging(food packaging), of an automobile part (e.g. cladding for thewheelhousing), for portable equipment (tables, chairs, benches),decking, or doors, and the like. The biomaterial of the invention canalso be used to produce baskets or containers, in particular those usedin the food industry.

While this invention has been described in conjunction with the specificembodiments outlined herein, it is evident that many alternatives,modifications, and variations will be apparent to those skilled in theart. Accordingly, the preferred embodiments of the invention as setforth herein are intended to be illustrative, not limiting. Variouschanges may be made without departing from the spirit and scope of theinventions as defined in the claims.

Below: Tables 1, 2, 3, 4 and 5.

TABLE 1 BYK Additives & Instruments Technical Data Sheet SCONA TPPP 8112FA Issue Jul. 2011 Adhesion modifier for polypropylene-natural-fibercompounds and in TPES compounds Chemical structure SCONA TPPP 8112 FAPolypropylene, highly functionalized with maleic anhydride PropertiesMelt index in g/10 min Loss on (MFI 190° C., drying in % MA content 2.16kg) 3 h/110° C. in % SCONA TPPP 8112 FA >80 <0.5 1.4 The values statedare typical, but do not represent a specification. Recommended additionquantities Addition quantity in % of supply form, based on entireformulation SCONA TPPP 8112 FA From 0.8 to 3, dependent on natural fibercontent and on PP content in TPES compound Incorporation and procedureHomogeneous dispersion of the modifier in the compound Applicationsectors SCONA TPPP 8112 FA Coupling agent in polypropylene-natural-fibercompounds Adhesive modifier in TPES compounds A member of ALTANATechnical Data Sheet Issue Jul. 2011 Properties and advantages SCONATPPP 8112 FA Good flow properties in highly filled TPES compoundsSignificant improvement in mechanical properties inpolypropylene-natural-fiber compounds Reduction of water absorption inpolypropylene- natural-fiber compounds Good suitability for masterbatchproduction Notes Supply form: Powder Storage and transport SCONA TPPP8112 FA Storage temperature max. 35° C. Relative humidity <80% Avoiddirect exposure to sunlight and avoid contact with water BYK KometraGmbH ANTI-TERRA ®, ATEPAS ®, BYK ®, BYK ®-DYNWET ®, Value Park: Y 42BYK ®-SILCLEAN ®, BYKANOL ®, BYKETOL ®, 06258 Schkopau BYKJET ®,BYKOPLAST ®, BYKUMEN ®, Germany DISPERBYK ®, DISPERPLAST ®, ISAROL ®,LACTIMON ®, NANOBYK ®, SCONA ®, SILBYK ® and VISCOBYK ® are registeredtrademarks of BYK-Chemie AQUACER ®, AQUAMAT ®, AQUATIX ®, CERACOL ®,CERAPAK ®, CERAFLOUR ®, CERAMAT ®, CERATIX ®, HORDAMER ® and MINERPOL ®are registered trademarks of BYK-Cera Tel: +49 3461 4960-60 Theinformation above is given to the best of our knowledge. Fax: +49 34614960-70 Because of the multitude of formulations and conditions ofInfo@byk(dot)com production, operation and processing, the use of theproduct www(dot)byk(dot)com/additives must be checked in relation to thespecific conditions used by the processor. The information provided inthis Data Sheet is not to be interpreted as assurance of any particularproperty; we bear no responsibility for use of the product outside ofthe application sectors recommended; no liability can be derived fromthe above—and this also applies to any patent infringement This Issuereplaces all previous versions—printed in Germany

TABLE 2 BYK Additives & Instruments Data Sheet X506 BYK-P 4200 IssueMar. 2010 Stripping agent to reduce odor and VOC emissions inthermoplastic compounds Chemical structure BYK-P 4200 Aqueous solutionof polymeric, surface-active substances adsorbed on a polypropylenecarrier Properties Melting MVR in accordance Bulk point with ISO 1133density in ° C. cm³/10 min kg/m³ BYK-P 4200 160 25 370 The values statedare typical, but do not represent a specification. Recommended additionquantities Additive quantity in % of supply form, based on entireformulation BYK-P 4200 From 0.5 to 2.0% Incorporation and procedureBYK-P 4200 should be added to the plastic during or prior to compoundingprocess Application sectors Polypropylene Polyethylene ABS BYK-P 4200 ▪▪ □ ▪ particularly recommended application sector □ recommendedapplication sector Function The effect of adding BYK-P 4200 is to reducethe level of compound constituents that cause odor and emissions, oreven to remove these entirely, during vacuum devolatilization. A memberof ALTANA Data Sheet X506 Issue Mar. 2010 Properties and advantagesBYK-P 4200 Major reduction in level of odor and VOC emissions adverseeffect on mechanical and optical properties No additional capitalexpenditure necessary for plant extensions Easy to use Notes To achieveefficient performance of the additive, vacuum devolatilization using atleast 100 mbar is recommended. Wherever possible, operations should useonly one vent shortly before the end of the extruder. BYK-Chemie GmbHANTI-TERRA ®, ATEPAS ®, BYK ®, BYK ®-DYNWET ®, PO Box 10 02 45BYK ®-SILCLEAN ®, BYKANOL ®, BYKETOL ®, 46462 Wesel BYKOPLAST ®,BYKUMEN ®, DISPERBYK ®, Germany DISPERPLAST ®, ISAROL ®, LACTIMON ®,NANOBYK ®, SILBYK ® and VISCOBYK ® are registered trademarks ofBYK-Chemie AQUACER ®, AQUAMAT ®, AQUATIX ®, CERACOL ®, CERAPAK ®,CERAFLOUR ®, CERAMAT ®, CERATIX ® and MINERPOL ® are registeredtrademarks of BYK-Cera Tel: +49 281 670-0 LICOMER is a registeredtrademark of Clariant Fax: +49 281 65735 The information above is givento the best of our knowledge. Info@byk(dot)com Because of the multitudeof formulations and conditions of www(dot)byk(dot)com/additivesproduction, operation and processing, the use of the product must bechecked in relation to the specific conditions used by the processor.The information provided in this Data Sheet is not to be interpreted asassurance of any particular property; we bear no responsibility for useof the product outside of the application sectors recommended; noliability can be derived from the above—and this also applies to anypatent infringement This Issue replaces all previous versions—printed inGermany Material Data Center | Datasheet Moplen EP300K

TABLE 5 Home Imprint About Material Data Center is a leadinginternational information system for the plastics industry. MaterialData Center offers a comprehensive plastics database, calculation tools,CAE interfaces, a literature database and an application database. Formore information about Material Data Center visitwww(dot)materialdatacenter(dot)com This is the free Material Data CenterDatasheet of Moplen EP300K-PP-LyondellBasell Industries Material DataCenter offers the following functions for Moplen EP300K: unitconversion, PDF datasheet print, comparison with other plastics, snapfit calculation, beam deflection calculation Check here, which otherMoplen datasheets, application examples or technical articles areavailable in Material Data Center Use the following short links to getdirectly to the properties of interest in this datasheet: Rheologicalproperties ISO Data Value Unit Test Standard Melt volume-flow rate (MVR)5.4 cm³/10 min ISO 1133 Temperature 230 ° C. ISO 1133 Load 2.16 kg ISO1133 Melt flow index (MFI) 4 g/10 min ISO 1133 MFI temperature 230 ° C.ISO 1133 MFI load 2.16 kg ISO 1133 Mechanical properties ISO Data ValueUnit Test Standard Tensile Modulus 1200 MPa ISO 527-1/−2 Yield stress 27MPa ISO 527-1/−2 Yield strain 7 % ISO 527-1/−2 Strain at break 50 % ISO527-1/−2 Charpy impact strength (+23° C.) N kJ/m² ISO 179/1eU Charpynotched impact strength 10.5 kJ/m² ISO 179/1eA (+23° C.) Ballindentation hardness 53 MPa ISO 2039-1 Thermal properties ISO Data ValueUnit Test Standard Temp. of deflection under load 75 ° C. ISO 75-1/−2(0.45 MPa) Vicat softening point (A) 150 ° C. ISO 306 Vicat softeningpoint 71 ° C. ISO 306 (50° C./h 50N) Other properties ISO Data ValueUnit Test Standard Density 900 kg/m³ ISO 1183 Characteristics ProcessingInjection molding, other extrusion, thermoforming Specialcharacteristics High impact/impact modified Features Impact copolymerApplications General purpose Regional availability Europe, MiddleEast/Africa Disclaimer Copyright M-Base Engineering + Software GmbH.M-Base Engineering + Software GmbH assumes no liability for the systemto be free of errors. The user takes sole responsibility for the use ofthis data under the exclusion of every liability from M-Base; this isespecially valid for claims of compensation resulting from consequentialdamages. M-Base explicitly points out that any decision about use ofmaterials must be double checked with the producer of this material.This includes all contents of this system. Copyright laws are applicablefor the content of this system. Material Data Center is provided byM-Base Engineering + Software GmbH. M-Base Engineering + Software GmbHassumes no liability for the system to be free from errors. Any decisionabout use of materials must be checked in detail with the relevantproducer. Additional information about this material, for examplesubstance group, producer contact address, and also in some casesdatasheets and application examples can be found atwww(dot)materialdatacenter(dot)com. Some of the information isrestricted to registered users. On the Start page there is a link tofree Registration.

The invention claimed is:
 1. A process for the production of asunflower-based composite material, comprising: separating sunflowerseed husks from sunflower seed cores by a peeling process; processingthe separated sunflower seed husks so that: the water content of thesunflower seed husks is reduced to no more than 15% of the mass of thesunflower seed husks; the sunflower seed husks are comminuted or groundto a desired grain size; and the fat content of the sunflower seed husksis reduced by subjecting the sunflower seed husks to a fat absorptionprocess; and compounding the processed sunflower seed husks with aplastics material to produce the sunflower-based composite material;wherein the fat content of the sunflower seed husks is reduced to nomore than 6% of the mass of the sunflower seed husks.
 2. The process forthe production of the sunflower-based composite material according toclaim 1; wherein the fat content of the sunflower seed husks is reducedto no more than 5% of the mass of the sunflower seed husks.
 3. Theprocess for the production of the sunflower-based composite materialaccording to claim 2; wherein the fat content of the sunflower seedhusks is reduced to no more than 4% of the mass of the sunflower seedhusks.